Do not compare build metadata if null (#2501)

Author: 8W9aG

test-integration/test_integration/util.py

@@ -93,9 +93,13 @@ def assert_versions_match(semver_version: str, pep440_version: str):
         if semver_pre.startswith("dev"):
             assert pep440_groups["dev_l"] == "dev", "Dev build status does not match"
 
-    assert pep440_groups["local"].startswith(semver_groups["buildmetadata"]), (
-        f"Local/build metadata component does not match: {semver_groups['buildmetadata']} != {pep440_groups['local']}"
-    )
+    if (
+        pep440_groups["local"] is not None
+        and semver_groups["buildmetadata"] is not None
+    ):
+        assert pep440_groups["local"].startswith(semver_groups["buildmetadata"]), (
+            f"Local/build metadata component does not match: {semver_groups['buildmetadata']} != {pep440_groups['local']}"
+        )
 
 
 def random_string(length):